Display device and display driving method

Abstract

A display device and a display driving method are provided. The display device includes a backlight module, a display panel disposed on a light emitting surface of the backlight module, at least a blue light source disposed in the backlight module, and a display driving circuit disposed on the display panel. A first blue light wavelength of the blue light source is greater than 440 nm; the display driving circuit stores a blue light gamma curve of the blue light source; the display driving circuit is used to correct the blue light source according to the blue light gamma curve.

What is claimed is: 
     
       1. A display driving method of a display device, comprising:
 providing a backlight module; 
 disposing at least one blue light source in the backlight module, wherein a first blue light wavelength of the at least one blue light source is greater than 440 nm; 
 correcting the at least one blue light source according to a blue light gamma curve; 
 wherein a range of the first blue light wavelength is greater than 440 nm and less than or equal to 480 nm; 
 wherein the step of correcting the at least one blue light source according to a blue light gamma curve comprises: 
 selecting the first blue light wavelength of the at least one blue light source; 
 calculating relations of light intensity versus wavelength of the first blue light wavelength and a second blue light wavelength of 440 nm; 
 calculating a corresponding multiple relation of light intensity versus the first blue light wavelength at respective blue light intensities of a light source with the second blue light wavelength, based on a ratio relation between the first blue light wavelength and the second blue light wavelength; 
 recording a relation of the second blue light wavelength and corresponding grayscales of display device, to obtain the blue light gamma curve. 
 
     
     
       2. The display driving method of a display device according to  claim 1 , further comprising:
 correcting a white light gamma curve based on the at least one blue light source, and storing the blue light gamma curve, a red light gamma curve and a green light gamma curve corresponding to the white light gamma curve into a display driving circuit. 
 
     
     
       3. The display driving method of a display device according to  claim 2 , wherein a gamma value of the white light gamma curve is 2.2.